[Security] Update All hosts screenshot (#3776)

Resolves #3635 by updating
the screenshot of the All hosts tab on the Hosts page to show the Asset
criticality column.

Preview: [Hosts and Users
pages](https://docs-v3-preview.elastic.dev/elastic/docs-content/pull/3776/solutions/security/advanced-entity-analytics/view-analyze-risk-score-data#hosts-users-pages)

Author: natasha-moore-elastic